Court is one of 11 new signings at London Irish and he hopes he can help lead them to a top-half finish after ending up tenth last season.
"A big point for me to come in and try and help out as a senior player, help to build something here," Court told The Irish Post.
"I came in at Ulster when I'd only been playing rugby about 18 months and I worked and worked for years to learn how to play really, and get into the first team.
"The plans at London Irish are not only optimistic, they really want to push themselves right back up to where they were.
"I think they're building a foundation to do that. To come in and help them get back to where they should be was a big thing for me."